WO2004102070A3 - High set seperated overfire air system for pulverized coal fired boilers - Google Patents

High set seperated overfire air system for pulverized coal fired boilers Download PDF

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Publication number
WO2004102070A3
WO2004102070A3 PCT/US2004/010238 US2004010238W WO2004102070A3 WO 2004102070 A3 WO2004102070 A3 WO 2004102070A3 US 2004010238 W US2004010238 W US 2004010238W WO 2004102070 A3 WO2004102070 A3 WO 2004102070A3
Authority
WO
WIPO (PCT)
Prior art keywords
offset
air
combustion chamber
fuel
diagonal
Prior art date
Application number
PCT/US2004/010238
Other languages
French (fr)
Other versions
WO2004102070A2 (en
Inventor
Douglas J Hart
Robert D Lewis
Charles Q Maney
Michael S Mccartney
David B O'neil
Galen H Richards
Original Assignee
Alstom Technology Ltd
Douglas J Hart
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alstom Technology Ltd, Douglas J Hart filed Critical Alstom Technology Ltd
Publication of WO2004102070A2 publication Critical patent/WO2004102070A2/en
Publication of WO2004102070A3 publication Critical patent/WO2004102070A3/en
Priority to IL171017A priority Critical patent/IL171017A/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D1/00—Burners for combustion of pulverulent fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D1/00—Burners for combustion of pulverulent fuel
    • F23D1/02—Vortex burners, e.g. for cyclone-type combustion apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C5/00—Disposition of burners with respect to the combustion chamber or to one another; Mounting of burners in combustion apparatus
    • F23C5/08—Disposition of burners
    • F23C5/32—Disposition of burners to obtain rotating flames, i.e. flames moving helically or spirally
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C6/00—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion
    • F23C6/04—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection
    • F23C6/045—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection with staged combustion in a single enclosure
    • F23C6/047—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion in series connection with staged combustion in a single enclosure with fuel supply in stages

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion Of Fluid Fuel (AREA)

Abstract

A furnace (10) includes a series of lower compartments (18) extending in a vertical arrangement, with at least one of the lower compartments (18) having one or more fuel nozzles (20) which tangentially fires fuel into the combustion chamber at an offset from a diagonal (DD) passing through opposed corners of the combustion chamber. At least one of the lower compartments (18) has one or more air nozzles (22) which tangentially introduces air into the combustion chamber along an offset direction which is offset from the diagonal (DD) to the same side as the fuel firing offset direction. The tangentially fired air and the offset fired fuel create a swirling fireball (RB) in the combustion chamber. At least one overfire compartment (24) has at least one air nozzle (40) for injecting air in opposition to the swirling fireball (RB), along an opposition offset direction which is offset to the other side of the diagonal (DD), in a manner such that the injected air promotes the evolution of the swirling fireball (RB) into an upward flow.
PCT/US2004/010238 2003-05-09 2004-04-02 High set seperated overfire air system for pulverized coal fired boilers WO2004102070A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IL171017A IL171017A (en) 2003-05-09 2005-09-21 High set separated overfire air system for pulverized coal fired furnace

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/434,565 US20040221777A1 (en) 2003-05-09 2003-05-09 High-set separated overfire air system for pulverized coal fired boilers
US10/434,565 2003-05-09

Publications (2)

Publication Number Publication Date
WO2004102070A2 WO2004102070A2 (en) 2004-11-25
WO2004102070A3 true WO2004102070A3 (en) 2005-03-31

Family

ID=33416720

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/010238 WO2004102070A2 (en) 2003-05-09 2004-04-02 High set seperated overfire air system for pulverized coal fired boilers

Country Status (6)

Country Link
US (1) US20040221777A1 (en)
CN (4) CN101571286B (en)
ES (1) ES2322522B1 (en)
IL (1) IL171017A (en)
TW (1) TWI306144B (en)
WO (1) WO2004102070A2 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101421744B1 (en) * 2006-01-11 2014-07-22 바브콕-히다찌 가부시끼가이샤 Pulverized coal-fired boiler and pulverized coal combustion method
US7810400B2 (en) * 2007-07-24 2010-10-12 Cidra Corporate Services Inc. Velocity based method for determining air-fuel ratio of a fluid flow
CN101598333B (en) * 2009-06-30 2012-09-26 上海锅炉厂有限公司 Low-nitrogen oxide discharging coal powder tangential combustion device
CN102338375A (en) * 2010-12-20 2012-02-01 武汉华是能源环境工程有限公司 Multi-coal low-nitrogen direct-current coal dust combustion device
CN102012019B (en) * 2010-12-20 2012-07-04 武汉华是能源环境工程有限公司 Multiple coal type low-nitrogen direct flow pulverized coal combustion device and control method of nozzle thereof
US20120174837A1 (en) * 2011-01-06 2012-07-12 Jiefeng Shan Tiltable nozzle assembly for an overfire air port in a coal burning power plant
EP3021046B1 (en) * 2013-07-09 2018-09-19 Mitsubishi Hitachi Power Systems, Ltd. Combustion device
JP6326593B2 (en) * 2014-02-14 2018-05-23 三菱日立パワーシステムズ株式会社 Burner device, boiler using the same, and combustion method of burner device
US10634341B2 (en) 2016-08-23 2020-04-28 General Electric Technology Gmbh Overfire air system for low nitrogen oxide tangentially fired boiler
US11305302B2 (en) * 2020-01-22 2022-04-19 General Electric Company Nozzle assembly for a solid fuel burner and method of operating a nozzle assembly for a solid fuel burner

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5020454A (en) * 1990-10-31 1991-06-04 Combustion Engineering, Inc. Clustered concentric tangential firing system
US5315939A (en) * 1993-05-13 1994-05-31 Combustion Engineering, Inc. Integrated low NOx tangential firing system
US5343820A (en) * 1992-07-02 1994-09-06 Combustion Engineering, Inc. Advanced overfire air system for NOx control
US6148744A (en) * 1999-09-21 2000-11-21 Abb Alstom Power Inc. Coal firing furnace and method of operating a coal-fired furnace
US6202575B1 (en) * 1999-02-18 2001-03-20 Abb Alstom Power Inc. Corner windbox overfire air compartment for a fossil fuel-fired furnace

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4150631A (en) * 1977-12-27 1979-04-24 Combustion Engineering, Inc. Coal fired furance
US4434727A (en) * 1979-04-13 1984-03-06 Combustion Engineering, Inc. Method for low load operation of a coal-fired furnace
US4672900A (en) * 1983-03-10 1987-06-16 Combustion Engineering, Inc. System for injecting overfire air into a tangentially-fired furnace
US4501204A (en) * 1984-05-21 1985-02-26 Combustion Engineering, Inc. Overfire air admission with varying momentum air streams
IN168173B (en) * 1986-03-24 1991-02-16 Combustion Eng
TW256873B (en) * 1993-12-29 1995-09-11 Combustion Eng
CN2246240Y (en) * 1995-10-26 1997-01-29 杨润兴 Sink flow spiral burner
US5626085A (en) * 1995-12-26 1997-05-06 Combustion Engineering, Inc. Control of staged combustion, low NOx firing systems with single or multiple levels of overfire air
US5746143A (en) * 1996-02-06 1998-05-05 Vatsky; Joel Combustion system for a coal-fired furnace having an air nozzle for discharging air along the inner surface of a furnace wall
US6138588A (en) * 1999-08-10 2000-10-31 Abb Alstom Power Inc. Method of operating a coal-fired furnace to control the flow of combustion products
US6302039B1 (en) * 1999-08-25 2001-10-16 Boiler Island Air Systems Inc. Method and apparatus for further improving fluid flow and gas mixing in boilers

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5020454A (en) * 1990-10-31 1991-06-04 Combustion Engineering, Inc. Clustered concentric tangential firing system
US5343820A (en) * 1992-07-02 1994-09-06 Combustion Engineering, Inc. Advanced overfire air system for NOx control
US5315939A (en) * 1993-05-13 1994-05-31 Combustion Engineering, Inc. Integrated low NOx tangential firing system
US6202575B1 (en) * 1999-02-18 2001-03-20 Abb Alstom Power Inc. Corner windbox overfire air compartment for a fossil fuel-fired furnace
US6148744A (en) * 1999-09-21 2000-11-21 Abb Alstom Power Inc. Coal firing furnace and method of operating a coal-fired furnace

Also Published As

Publication number Publication date
CN1784573A (en) 2006-06-07
CN101571287A (en) 2009-11-04
CN101571285B (en) 2012-07-18
CN101571287B (en) 2011-04-06
ES2322522A1 (en) 2009-06-22
US20040221777A1 (en) 2004-11-11
WO2004102070A2 (en) 2004-11-25
CN100520174C (en) 2009-07-29
IL171017A (en) 2013-08-29
CN101571286A (en) 2009-11-04
TW200502510A (en) 2005-01-16
TWI306144B (en) 2009-02-11
CN101571286B (en) 2011-05-25
CN101571285A (en) 2009-11-04
ES2322522B1 (en) 2010-03-17

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